| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.58 |
| Score | 0% | 72% |
If a = c = 1, b = d = 9, and the blue angle = 66°, what is the area of this parallelogram?
| 40 | |
| 35 | |
| 9 | |
| 72 |
The area of a parallelogram is equal to its length x width:
a = l x w
a = a x b
a = 1 x 9
a = 9
On this circle, line segment AB is the:
circumference |
|
chord |
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radius |
|
diameter |
A circle is a figure in which each point around its perimeter is an equal distance from the center. The radius of a circle is the distance between the center and any point along its perimeter. A chord is a line segment that connects any two points along its perimeter. The diameter of a circle is the length of a chord that passes through the center of the circle and equals twice the circle's radius (2r).
Simplify (7a)(4ab) - (4a2)(7b).
| 0a2b | |
| b2 | |
| 121a2b | |
| 56a2b |
To multiply monomials, multiply the coefficients (the numbers that come before the variables) of each term, add the exponents of like variables, and multiply the different variables together.
(7a)(4ab) - (4a2)(7b)
(7 x 4)(a x a x b) - (4 x 7)(a2 x b)
(28)(a1+1 x b) - (28)(a2b)
28a2b - 28a2b
0a2b
Which of the following expressions contains exactly two terms?
monomial |
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polynomial |
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quadratic |
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binomial |
A monomial contains one term, a binomial contains two terms, and a polynomial contains more than two terms.
What is 2a8 - 6a8?
| -4a8 | |
| 12a16 | |
| 8a16 | |
| -4 |
To combine like terms, add or subtract the coefficients (the numbers that come before the variables) of terms that have the same variable raised to the same exponent.
2a8 - 6a8 = -4a8